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<html>
	<head>
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		<meta http-equiv="X-UA-Compatible" content="IE=edge">
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		<title>响应式工具</title>
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			.row div{
				height: 100px;
				background: green;
				border: 1px solid #000;
				color: #fff;
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	<body>
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			针对不同的宽度，展示或者隐藏相关内容
        	visible-lg-block       显示
        	hidden-lg              隐藏
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		<div class="container">
			<div class="row">
				<div class="col-lg-4 visible-lg-block">第1行1列</div>
				<div class="col-lg-4 visible-lg-inline">第1行2列</div>
				<div class="col-lg-4 visible-lg-inline-block">第1行3列</div>
			</div>
			<div class="row">
				<div class="col-lg-4 visible-md-block">第2行1列</div>
				<div class="col-lg-4 visible-md-inline">第2行2列</div>
				<div class="col-lg-4 visible-md-inline-block">第2行3列</div>
			</div>
			<div class="row">
				<div class="col-lg-4 hidden-lg">第3行1列</div>
			</div>
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